西门塔尔奶牛产奶量与其体型线性性状的相关、通径分析

本文通过对某牛场２０头西门塔尔牛产奶量与其体型线性性状进行相关，通径分析。结果表明，尻长、乳房深、体高、胸围、乳头长与其产奶量呈弱正相关，尻宽与产奶量接的于中等正相关、尻长、尻宽、乳头长是影响产奶量的重要性状且是正向人艇，体高、胸围是影响产奶量的重要性状起负面作用，尻长、尻宽对产奶量的直接作用大。

Correlation and Path Analysis of Linear Conformation Traits and Milk Production in Simmental Cows

The correlation and path analysis of milk production and linear conformation traits of 20 Simmental cows in a dairy farm indicated that there was a weak positive relationships between milk production and conformation traits including rump length, udder depth, body height, heart girth and teats length; and a moderate positive relationships between rump width and milk production. The results suggested that rump length, rump width and teats length had an important positive effects on milk production, body height and heart girth showed a negative effects on milk production, the greater direct effects of rump length and width on milk production were noticed as well.